In addition to his ongoing role as ruthless politician Frank Underwood on Netflix's "House of Cards," Spacey has also been keeping busy with the upcoming "Horrible Bosses 2" (due out Nov. 26) -- not to mention another role in a very unorthodox project, especially for a Hollywood A-lister.

The 55-year-old actor recently lent his voice to the action-heavy "Call of Duty: Advanced Warfare," the fourth installment in the popular video game series. Many established actors, especially those of Spacey's stature, would likely balk at being offered a role in a video game, but the "American Beauty" star says he was happy to be involved in the project.

"It was an incredible experience to do it," Spacey said during a guest appearance Friday on the "Tonight Show Starring Jimmy Fallon."